leaf curl on hydrangea

Hydrangea leaftier larva (Photo from Diagnostic Laboratory, Crop Protection, Ministry of Agriculture, Fisheries and Quebec)

How to get rid of leaf curl on hydrangea?

Beckie Fox

V.J. in Cobourg, Ont., has a problem with leaf curl on hydrangea and wants to know how to prevent the leaf curling pest on Annabelle hydrangeas.